Detection of Polarization Entanglement after 75 km of Fiber Transmission

@article{Poppe2006DetectionOP,
  title={Detection of Polarization Entanglement after 75 km of Fiber Transmission},
  author={Andr{\'a}s Poppe and Hannes Hubel and Thomas L. Lederer and Alessandro Fedrizzi and Michael R. Vanner and Anton Zeilinger},
  journal={2006 European Conference on Optical Communications},
  year={2006},
  pages={1-2}
}
Polarization entanglement was measured over 75km of singlemode fiber. In the first 60km only minimal degradation of polarization entanglement was observed leaving sufficient visibility for secure quantum communication. 

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